Castalia Asteroid Sequence,1989
Numéro d’image : 12027006
| Castalia's orbit took it within eleven lunar distances of Earth,allowing it to be observed with radar from the Arecibo Observatory. Astronomers obtained this sequence of images by the technique of radar astronomy. The asteroid appears to be tumbling send over end as it moves through space. Castalia has a dumbbell or peanut shape and is about 1.1 miles across at its widest. Its two distinct lobes are about .47 miles across. It has a narrow waist of approximately 330 to 490 feet in depth. The two lobes were probably separate objects that came together after a relatively gentle collision. Radar astronomy is the branch of astronomy that uses radar to map the surfaces of planetary bodies and to determine periods of rotation | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / New York Public Library |
| Taille de l’image : | 3115 px × 3651 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : |
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